Chair



Nov. 13, 1928. i 1,691,033

A. J. ADAMS CHAIR Filed July 27, 1925 Htl Patented Nov. 13, 1928.

UAIIUTEDY STATES PATENTjjoFFicE.

ARTHUR J. ADAMS, oF BAY CITY, MICHIGAN, rAssrerNon To WILLIAM s. FERRIs, or ELKHABT, INDIANA, TRADING As :DoMoRn .CHAIRy COMPANY.

CHAIR.

Application rinea July 27, 1925 serial No. 46.224..

This invention relates to improvements in chairs, and consists of the matters hereinafter described and more particularly pointed out in the appended claim.

In metallic chairs which include adjustable side arms, and a relatively narrow back rest member connected to the top ends thereof, in a manner permitting it to tilt to adjust itself to the back of the occupant of the chair, no suitable means have been provided to secure the back rest in the desired adjusted angular position.

One of the objects of the present invention is to provide an attached bracket on the back rest member having not only a pivotal connection with the arms, but also a pin and slot connection by which an angular adjustment may be hadv and maintained.

These objects of the invention as well as other together with the many advantages thereof will more fully appear as I proceed with my specification.

In the drawings Fig. 1 is a viewrin side elevation of the seat and back rest of a chair embodying my improved construction.

Fig. 2 is a view in rear elevation on an enlarged scale of the backrest member and supporting arms of my improved chair, together with the means for operatively connecting them together in the desired angular relation.

Fig. 3 is a vertical section through the back rest, on a further -enlarged scale as taken on the line 3 3 of Fig. 2.

Fig. et is a detail horizontal sectional view as taken on the line 4-4 of Fig. 2.

Referring now in detail to that embodiment of the invention illustrated in the accompanying drawings, 1 indicates the seat post and 2 indicates the seat frame mounted thereon. As shown herein the chair is of the swiveling seat type but this is to be considered as by wayV of illustration only and not by way of limitation, because as will hereinafter appear, the improved back` rest construction is also adapted for use in connection with a chair of the stationary or non-swiveling seat type. The seat frame includes side members, 3 in the form of angle bars in the vertical flanges of which are provided a plurality of sets of holes 4 4. The seat, 5 is of va width greater than its depth, and rests at its ends upon 'are directed upwardly and rearwardlyrv in a substantial curve and are held in the desired position by reversely curved braces 8 8. The top ends of said braces as herein shown, are secured to the arms 6 6 at points between the ends thereof and the bottomk ends of said braces are secured in the rearmost set of holes 4t in the sidefframe members 3 as best shown in Fig. 1. VThus ythe 7 said back rest supporting arms are adjustable, forwardly and rearwardly of the seat frame as is apparent. The top ends 9 ofl the side arms 6 6 are offset inwardlyV toward each other and ,are adapted to support a back rest member 10 in a manner now to be described.

The back rest member 1() is comparatively narrow with reference toits width and is curved or bowed rearwardly soas to better tit the back of the occupant. Near the ends of and on the rear side of the back rest member which may or may not be padded or upholstered on its front side, are provided brackets 11 11 (see Fig. 2) each of which includes a base portion 12 and a second portion 13 arranged at substantially a right angle thereto.` The base portion 12 of each bracket 'which is disposed vertically with respect to the back member is providedwith suitable spaced openings 14 to receive bolts or rivets 15 by which the brackets are securely attached to the back rest member in such a spaced apart relation that the y'portions 13 of said brackets engage the inner surfaces of the inwardly offset top ends 9 of the'arms 6. The top end of each portion. 13 is pivotally connected to the top end of the associated side arm 6 by means of rivet 16. The bottom part is provided an arcuatev slot-17 concentric with the rivet 16. A bolt 18 passes through an opening 19 near the top end of each arm 6 and through said arcuate slot 17,A a nut and washer 20 engaging the bolt to secureY the back rest member in the desired angular relation to said arm ends.

When it isY desired to adjust the back rest member angularly with respect to the arm lwith respect rest is then swung about the pivot or axis rivets` 16 into the desired angular position, the slots 17 permitting such movement after which the nuts 2O are tightened to securely hold the back rest member in the newly adjusted position. By the adjustment ot said back rest member and said side arms, it 1s I claim as my invention A chair embodying therein, a pair of relatively narrow side arms, a back rest member, brackets iixed on said back rest member and including portions extending at substantially a right angle thereto and wider than said side arms, means providing a pivotal connection between said wider bracketportions and the top ends ot said arms, said bracket portons having slots concentric with and below said pivotal connection, and means carried by said armsl and extending through said concentric slots'ior clamping said ends olf saidarms to said wider bracket portions.

in testimony whereof, l have hereunto set my hand, this 6th day oi liuly, 1925.

ARTHUR J. ADAMS, 

